Gyratory crusher with sealing ring



2 Shee ts-Sheet 1 Filed Nov. 23, 1953 INVENTOR ART HUR W.Ll PPMAN NApril 2, 1957 A. w. LIPPMANN 2,787,424

GYRATORY CRUSHER WITH SEALING RING Filed Nov. 23, 1953 2 Sheets-Shed 2 v35 V a? IN NTOR ARTHUR. IPPMANN as ATTORNEYS GYRATORY CRUSHER WITHSEALING RING Arthur W. Lipplnann, Milwaukee, Wis., assignor to LippmannEngineering Works, Milwaukee, Wis., a partnership Application November23, 1953, Serial No. 393,659

2 Claims. (Cl. 241-216) This invention appertains to rock crushers ofthe general type shown in my prior Patents No. 2,579,238 and No.2,579,239, issued to me on December 18, 1951, in which the crushing headis given a gyratory motion relative to the stationary concave or bowl.

In this type of crusher, difiiculty is encountered in the properlubrication of the bearings, in that certain bearings will be floodedwith lubricant while other bearings will not receive their desiredsupply.

One of the primary objects of my invention is the provision of a sealingring interposed between the crushing head and the stationary frame ofthe crusher and so located that the same will prevent the too rapidescape of the lubricant from the radial bearings and the upper thrustbearing, and at the same time prevent the flooding of the lowerlubricant channel which is provided with a drain passageway.

Another salient object of my invention is to provide novel means formounting the sealing ring, so that in spite of the gyratory action ofthe crushing head the desired seal be maintained.

A further important object of my invention is to provide a sealing meansof the above character, which can be incorporated with a gyratorycrusher at the time of its assembly with the expenditure of a minimumamount of time, labor and money.

With these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts, as will behereinafter more specifically described and claimed, and illustrated inthe accompanying drawings, in which drawings,

Figure 1, is a central vertical sectional view through a gyratorycrusher embodying the features of my present invention, the sectionbeing taken on the line 1-1 of Figure 2, looking in the direction of thearrows.

Figure 2 is a horizontal sectional view taken on the line 22 of Figure1, looking in the direction of the arrows and illustrating the positionand arrangement of my sealing ring.

Figure 3 is a fragmentary detail side elevational view of a portion ofthe sealing ring with parts thereof broken away and in section toillustrate one way of uniting the ends of the ring together.

Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several views,the letter G generally indicates a gyratory crusher with my novelsealing means M incorporated therewith.

The gyratory crusher G can be of the general character shown in my priorpatents heretofore mentioned, and hence, the crusher includes a baseframe 5, which can be firmly secured to any suitable support (notshown). The frame 5 includes a cylindrical side wall 6. Formed on, orcarried by the frame 5, is an axially disposed reservoir shell wall 7for a lubricant and this wall can be united with the side walls 6 of theframe by radially extending webs. Communicating with one side of thereservoir is a bearing sleeve 9. The wall 7 also forms nited StatesPatent 2,787,424 Patented Apr. 2, 1957 a support for a crushing head 10,as will be later pointed out.

Mounted around the crushing head 10 is a bowl 11 for the rock to becrushed, and this bowl is carried by the frame 5 in a certain mannerwhich forms no part of the present invention.

The crushing head 10 includes a substantially discshaped main bodyportion 12, which carries the crushing mantle 13. The mantle 13 and themain body portion 12 are mounted on a centrally disposed shaft 14.

Rotatably mounted in the reservoir shell wall 7 is a drive sleeve 15.Inner and outer bearing sleeves 16 and 17 are inteiposed respectivelybetween the shaft 14 and the drive sleeve 15 and between the drivesleeve 15 and the reservoir shell wall 7. The bearing sleeves 16 and 17constitute the radial bearings and the outer bearing ice ' sleeve 17 hasformed thereon a thrust bearing 18 on which the main body portion 12 ofthe crushing head rests. The drive sleeve 15 constitutes the eccentricand upon rotation of the drive sleeve, the crushing head will be gyratedrelative to the bowl 11.

The drive sleeve 15 can be rotated in any desired way, such as throughthe medium of a drive shaft 19, which extends into the frame 5 throughthe bearing sleeve 9. The shaft 19 has keyed, or otherwise secured,thereto a drive gear 20 which meshes with a beveled ring gear 21,rigidly fastened to the drive sleeve 15. A lower thrust bearing 22 isutilized between the bottom of the frame and the drive sleeve 15. Thecrushing head 10 and the wall 7 are provided with sealing and drag rings23 and 24 which form the subject matter of my Patent No. 2,579,239.

Particular attention is called to the fact that the up per face of thewall 7 is provided with an outer lubricant channel 25 which is disposedjust inward of the sealing and drag rings 23 and 24 and that an innerlubricant channel 26 is formed between the crushing head and the drivesleeve 15 and its bearing sleeves 16 and 17. A forced feed lubricantpassageway 27 communicates with the inner lubricant channel 26 through aport 28 and lubricant under pressure is forced in the passageway 27 byany desired type of pump (not shown) through the medium of a supply pipe29, which has communication with the passageway 27. Lubricant underpressure from the passageway 27 and annular channel 26 finds its waybetween the bearing sleeves 16 and 17, the inner surface of the wall 7and the drive sleeve 15 and between the thrust bearing 18, the crushinghead and the upper face of the wail 7. A drain passageway 30 extendsthrough the wall 7 from the upper face thereof below the upper thrustbearing 15 to the oil reservoir defined-partly by the wall 7. Oilseeping around the thrust bearing 18 flows into this drain passageway 30and communicating with the upper end of this passageway is a port 31which opens out through the outer face of the wall 7 above the sealingand drag rings 23 and 2 1 and oil coming through this port flows aroundbetween the crushing head and the upper part of the wall 7 and collectsin the channel 25. Communicating with this channel 25 is a drainpassageway 32 which leads back to the oil reservoir. Means, which formsno part of this invention, is provided for lubricating the bearings forthe drive shaft 19.

During the use of the gyratory crusher and the lubrication thereof, ithas been found that the lubricant tends to escape radially quickly andflood the channel 25. The oil then tends to escape between the frictionand drag rings 23 and 24- and insuflicient lubricant is supplied to theradial bearings 16 and 17.

In accordance with the present invention, I provide my sealing means Mto eliminate this difliculty. The sealing means M consists of aresilient, preferably, steel ring 33 and the outer surface of the wall 7above the outer channel 25 and the sealing and drag rings 23 and 24 isprovided with a relative deep annular groove 34. The ring 33 is disposeddirectly below the port 31 and is of such a nature as to intimatelyengage the inner surface of the crushing head adjacent to the lower endthereof. This ring can be considered as of the piston ring type andduring the gyratory motion of the crushing head the ring moves freely inthe groove 34 and follows the motion of the crushing head. Hence, a sealis established between the wall 7 and the crushing head above thechannel 25 and the ring functions to hold back the flow of oil above thechannel, not only to prevent the flooding of this channel but to givethe lubricant time to seep and find its way around the active faces ofthe bearing sleeves 16 and 17.

The ring can be formed in different manners, and in the presentinstance, the ring has been shown to be of the split type, and when thering is sprung into the groove 34 the ends are brought into over-lappingrelation, as is clearly shown in Figure 3 of the drawing. These ends canbe secured together if so desired by means of a pin 35.

Changes in details may be made without departing from the spirit or thescope of this invention, but what I claim as new is:

1. In a gyratory crusher, a frame, a crushing concave on the frame, adriven sleeve, means for driving said sleeve, a crushing head, a portionof said frame partially surrounding the sleeve, a stabilizing bearingsupport between the sleeve and head, a bearing support between thesleeve and the portion of the frame surrounding the sleeve, friction anddrag rings carried respectively by the head and said portion of theframe surrounding the sleeve having intimate rubbing contact, an innerlubricant channel between the head and the bearing supports, a forcedfeed passageway for lubricant having communication with the channel, andsaid mentioned portion of the frame having an outer channel forlubricant directly inward of said friction and drag rings, and a sealingring disposed directly above the outer channel and the fricavsrnaa onthe frame, a driven sleeve, means for driving said sleeve, a crushinghead, a portion of said frame partially surrounding the sleeve, astabilizing bearing support between the sleeve and head, a bearingsupport between the sleeve and the portion of the frame surrounding thesleeve, friction and drag rings carried respectively by the head andsaid portion of the frame surrounding the sleeve having intimate rubbingcontact, an inner lubricant channel between the head and the bearingsupports, a force fee pas ag way f r l br an ha ing omm nic on Wi h thechannel, and s id mentione portion of the frame having an outer channelfor lubric nt directly inward of said friction and drag rings, and asealing ring engaging an inner surface of the crushing head and saidmentioned portion of the frame having a groove slidably supporting saidring, said ring having free gyratory motion in said groove for followingthe gyratory motion of the crushing head and being disposed directlyabove the outer channel and the friction rings and below the innerchannel establishing a sealing contact between the crushing head andsaid mentioned portion of the frame for holding back the flow oflubricant from the inner channel and the bearing supports to the outerchannel, and said bearing support having formed therein a drainpassageway communicating with the outer channel.

References Cited in the file of this patent UNITED STATES PATENTS

